A β-alanine derivative that is the amide obtained by formal condensation of the carboxy group of β-alanine with the primary amino group of histamine. ChEBI: Carcinine is a beta-alanine derivative that is the amide obtained by formal condensation of the carboxy group of beta-alanine with the primary amino group of histamine. It has a role as a crustacean metabolite and an antioxidant. It is a beta-alanine derivative, a monocarboxylic acid amide and a member of imidazoles. It is functionally related to a histamine. It is a conjugate base of a carcininium.